Research On Dynamic Elements With Rotation Of Elite Athlete In Individual Exercises Rhythmic Gymnastics In China

The development of individual exercises rhythmic gymnastics is currently relatively weak in China.In recent years,with the continuous updating of the international rhythmic gymnastics scoring rules and the continuous improvement of the overall level of rhythmic gymnastics,individual exercise has been moving towards the direction of high competitiveness,artistry and innovation.The dynamic elements with rotation are an important part of the complete set of the individual exercise,and it is also one of the ways to reflect the level of athletes’ athletic ability.Although there are a limited number of sets,if each dynamic element with rotation can choose a high-scored one,it will play a very important role in contributing to the high score of the set of moves,and it is also one of the important factors for winning the final match.The study is based on the international scoring rules of rhythmic gymnastics.The set of movements of the top eight individual athletes in the 2019 World Artistic Gymnastics Championships and National Artistic Gymnastics Championships are analyzed.Through the use of literature,expert interview,video analysis and mathematical statistics,the gaps between high-level athletes at home and abroad with the dynamic elements with rotation are analyzed,especially in the quantity,value,presentation time,and space use,in order to find a way to improve the dynamic elements with rotation and provide a certain reference for the improvement of the overall level of individual exercises rhythmic gymnastics in China.The major findings are presented as follows:1.The number of dynamic elements with rotation in the top eight athletes in National and World championships is basically the same,but the number of dynamic elements with rotation in ball,clubs,and ribbon exercises is slightly different,with China having smaller number than abroad.The scoreof dynamic elements with rotation is lower in China than in other foreign countries.The most widely used score in each of the four apparatus by China and foreign countries is dynamic elements with rotation with 0.7 score,while the score higher than 1.0(including 1.0)is lower in China than in foreign countries.The score of individual dynamic elements with rotation of Chinese athletes is relatively low.2.The factors of extra scores of the top eight athletes in the National Championships in the process of throwing in hoop,clubs,and ribbon exercises are lower than the top eight athletes in the World Championships,but the score in ball exercises is higher than the top eight athletes in the World Championships.For the number of body rotations during the apparatus flight,China is lower than abroad;The types of body rotation in China are relatively simple;The total number of dynamic elements with rotation and the total number of changes in the horizontal plane and axis of the body are lower than those in foreign countries.The factors of extra scores of the top eight athletes in the National Championships in the process of receiving apparatus are lower than those in the World Championships.The types of receiving apparatus of athletes in our country are relatively single and conservative.3.Most of the top eight athletes in the National Championships choose to complete the dynamic elements with rotation in the front section,while those in the World Championships prefer to complete in the later section.In the National and the World Championships,the most frequently used area of the horizontal space of the dynamic elements with rotation in the four apparatus is area 5.In horizontal space,no more than 2 areas are spanned,and there is no big difference in the overall use of the venue of the dynamic elements with rotation.4.To improve the level of dynamic elements with rotation in individual exercise in rhythmic gymnastics of our country,it is necessary to attach importance to the research on the latest development trend of dynamic elements with rotation,strengthening equipment technical training,improving athletes’ special physical quality and also choosing the movement according to the athlete’s ability.